A simple model of how to make a op controller in Python; convenient for data processing scripts with multiple functions.

op_controller.py

'''
A simple example of how to use an operation controller
(note, this doesn't run, all the functions are missing)
'''

'''
operation controller
'''
def controller(op_code, data, data2):
  ops = {
    1: lambda: method1(data),
    2: lambda: method2(data, json.load(open(data2, 'r')), False),
    3: lambda: method2(data, json.load(open(data2, 'r')), True),
    4: lambda: method3(data),
    5: lambda: method1(dedup_assist_types(data)),
    6: lambda: method2(dedup_assist_types(data), json.load(open(data2, 'r')), False),
    7: lambda: method2(dedup_assist_types(data), json.load(open(data2, 'r')), True),
    8: lambda: method3(dedup_assist_types(data))
  }
  return ops.get(int(op_code))()


'''
main
'''
def main(op_code, file, data2):
  with open(file) as f:
    data = create_data(f)
  print controller(op_code, data, data2)


'''
Takes three arguments, first is op_code,
second is a data file, third is another data file
'''
if __name__=="__main__":
  main(sys.argv[1], sys.argv[2], sys.argv[3])